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path: root/local/bin/grab-spot
blob: d116252f3869882a5750873f74f5f142d7891ab2 (plain)
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if [ -z $1 ]; then
	logger "$0: blank FROM currency"
	exit
fi
if [ -z $2 ]; then
	logger "$0: blank TO currency"
	exit
fi

# Only bother downloading if it's more than 3 hours old
if ([ ! -f ~/.cache/"$1$2" ] || [ $(find ~/.cache/"$1$2" -mmin +60) ]) ; then
	rate=$(curl "http://rate-exchange-1.appspot.com/currency?from=$1&to=$2" | jshon -e rate)
	if [ $? -ne 0 ] ; then
		logger "$0: curl error"
		exit
	fi
	printf "$1$2: %.4f" $rate > ~/.cache/"$1$2"
fi